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New Drug Delivery System to Improve Cancer Treatment
Date:3/16/2011

SYRACUSE, N.Y., March 16, 2011 /PRNewswire/ -- Scientists in Syracuse University's Chemistry Department have created a new drug delivery system expected to advance the effectiveness of cancer-killing drugs. It uses gold nanoparticles with attached DNA that binds to a proven anti-cancer drug, Doxorubicin or DOX.

Preliminary tests indicate this delivery device has the potential to significantly improve the results of cancer chemotherapy. DOX is currently used against cancers of the breast, bone marrow, thyroid, bladder, ovary, small cell lung and several others.

"The possibilities of this new system are really exciting," says SU Professor James C. Dabrowiak. "For example, it would be easy to add to the device molecules that have the ability to target cancer cells. Another possibility is using light excitation to release high concentrations of an anti-tumor drug directly within the tumor."

These and other upgrades could enable clinics to focus chemotherapy more tightly on cancer cells and reduce negative side effects on healthy cells in other parts of the body.

A key element of the new system is that the DNA attached to the gold particles is engineered specifically to bind to the DOX anti-tumor drug. Studies show that the DOX can be transferred by diffusion to a receptor DNA molecule.

The gold nanoparticles have an average diameter of only 15.5 nanometers or a few billionths of a meter. A single nanoparticle presents more than 100 DOX sites and that, when multiplied by millions of the particles, could create a massive and deadly assault on a tumor.

"We believe this work can bring significant gains in the effectiveness of chemotherapy treatments," says Mathew M. Maye, SU Assistant Professor of Chemistry and co-inventor of the delivery system. "We still have work to do but this advance opens a promising new field of investigation that can lead to important new clinical tools."

A key advantage of the new system is that
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SOURCE Syracuse University Office of Technology Transfer and Industrial Development
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